JOSEPH S. D'ALEO has 30 years experience in professional meteorology. He has BS and MS degrees in meteorology from the University of Wisconsin and did doctoral studies in meteorology at New York University. He taught meteorology at the college level for over eight years and was a cofounder and the first director of meteorology at the cable TV Weather Channel, a position he held for seven years. He joined Weather Services International (WSI) in 1989, where he was a marketing manager and chief meteorologist. Currently, he is senior editor (also known as Dr. Dewpoint) for WSI's Intellicast Web site. D'Aleo is a Certified Consultant Meteorologist and was elected a Fellow of the American Meteorological Society. He has authored, presented, and published numerous papers focused on advanced applications enabled by new technologies and how research into ENSO and other atmospheric and oceanic phenomena has made possible skillful seasonal forecasts.

• Preface El Nino and La Nina: "Children of the Tropics" What Causes El Nino and La Nina The Global Effects of El Nino and La Nina El Nino and La Nina Effects in the United Stated: Winter and Spring ENSO and Summer Weather Patterns Other Effects of ENSO How Scientists Study El Nino Forecasting ENSO Super El Ninos How Governments Use ENSO-Based Seasonal Forecasts ENSO, Tip of the Iceberg in Climate Protection Biographical Sketches Directory of Organizations Index

JOSEPH S. D'ALEO has 30 years experience in professional meteorology. He has BS and MS degrees in meteorology from the University of Wisconsin and did doctoral studies in meteorology at New York University. He taught meteorology at the college level for over eight years and was a cofounder and the first director of meteorology at the cable TV Weather Channel, a position he held for seven years. He joined Weather Services International (WSI) in 1989, where he was a marketing manager and chief meteorologist. Currently, he is senior editor (also known as Dr. Dewpoint) for WSI's Intellicast Web site. D'Aleo is a Certified Consultant Meteorologist and was elected a Fellow of the American Meteorological Society. He has authored, presented, and published numerous papers focused on advanced applications enabled by new technologies and how research into ENSO and other atmospheric and oceanic phenomena has made possible skillful seasonal forecasts.

• Preface El Nino and La Nina: "Children of the Tropics" What Causes El Nino and La Nina The Global Effects of El Nino and La Nina El Nino and La Nina Effects in the United Stated: Winter and Spring ENSO and Summer Weather Patterns Other Effects of ENSO How Scientists Study El Nino Forecasting ENSO Super El Ninos How Governments Use ENSO-Based Seasonal Forecasts ENSO, Tip of the Iceberg in Climate Protection Biographical Sketches Directory of Organizations Index

JOSEPH S. D'ALEO has 30 years experience in professional meteorology. He has BS and MS degrees in meteorology from the University of Wisconsin and did doctoral studies in meteorology at New York University. He taught meteorology at the college level for over eight years and was a cofounder and the first director of meteorology at the cable TV Weather Channel, a position he held for seven years. He joined Weather Services International (WSI) in 1989, where he was a marketing manager and chief meteorologist. Currently, he is senior editor (also known as Dr. Dewpoint) for WSI's Intellicast Web site. D'Aleo is a Certified Consultant Meteorologist and was elected a Fellow of the American Meteorological Society. He has authored, presented, and published numerous papers focused on advanced applications enabled by new technologies and how research into ENSO and other atmospheric and oceanic phenomena has made possible skillful seasonal forecasts.

• Preface El Nino and La Nina: "Children of the Tropics" What Causes El Nino and La Nina The Global Effects of El Nino and La Nina El Nino and La Nina Effects in the United Stated: Winter and Spring ENSO and Summer Weather Patterns Other Effects of ENSO How Scientists Study El Nino Forecasting ENSO Super El Ninos How Governments Use ENSO-Based Seasonal Forecasts ENSO, Tip of the Iceberg in Climate Protection Biographical Sketches Directory of Organizations Index